Nipple-barrier of the RKNN-ZK series with two threaded connections

The RKNN-ZK series barrier nipple with two threaded connections – image 2

The RKNN-ZK series barrier nipple with two threaded connections – image 3

The RKNN-ZK series barrier nipple with two threaded connections – image 4

The RKNN-ZK series barrier nipple with two threaded connections – Figure 5

Nipple-barrier of the RKNN-ZK series with two threaded connections - figure 6

Product Description

The RKNN-ZK is an explosion-proof barrier nipple with two external threads. It is used for dry transitions of flat, round, or fiber-optic cables between Ex equipment enclosures (e.g., between Ex d and Ex e, or between two Ex d equipment enclosures). Compound and fiberglass filling ensures a tight seal and reliable protection against the spread of gases, vapors, and flames.

Advantages

Sealed explosion-proof relief - provides a barrier between the sections of the shells, preventing the penetration of hazardous environments.
Wide choice of threads and materials – external threads of NPT, M, R, G types are available; bodies are made of nickel-plated brass, galvanized or AISI 304 stainless steel.
RKNN-ZK nipple barriers are included in the Register of Russian Industrial Products.

Frequently bought together

RKN-ZK Threaded Cable Adaptors

RKNC-ZK Plain Cable Entry Adaptors

Compliance with standards

GOST 31610.0-2014 (IEC 60079-0:2011)

GOST IEC 60079-1-2013

GOST R IEC 60079-7-2012

GOST 3160.15-2014 /IEC 60079-15:2010

GOST IEC 60079-31-2013

GOST 24754-2013

GOST 12.2.007.0-75

TR CU 012/2011

Certificates

In the Register of Russian Industrial Products

Maritime Register STO No. 25.44.01.13829.120

TU 27.33.13-031-72453807-2017

GOST R ISO 9001-2015

Markings

Explosion protection marking

Ex db IIC Gb U

Ex eb IIC Gb U

Ex tb IIIC Db U

Marking of mining equipment

PB Ex db I Mb

RP Ex eb I Mc

Ex db I Mb U

Ex eb I Mc U

Degree of protection

IP66/IP67/IP68
IK10

Technical data

Ambient temperature, °C

-60...+180

Thread

Code N conical inch NPT
Code M metric GOST 24705
Code R pipe conical GOST 6211-81
Code G pipe cylindrical GOST 6357-81

Material

Nickel-plated brass code NK
Galvanized steel code O
Stainless steel grade 08X18N10 according to GOST 5632-2014 (AISI 304) code N

Filling

PG-COMPOUND

Climatic category

NF1 (as required NF2, NF3, NF4, NF5, HL1, HL2, HL3, HL5, MU1, MU2, MU3, MU4, W2.1 , W5 )

Nipple-barrier of the RKNN-ZK series

Fitting type	Diameter, mm	H, mm	L, mm	h, mm	AC, mm	S, mm
RKNN-ZK	10	60	15	9	14	16,5
	12				16	19
	16				20	23,5
	20				27	30,2
	24				28	32,5
	25				30	34,5
	32				36	40
	33				36	42
	36				40	46,5
	38				42	48,5
	42				45	52

Options

Options, accessories and versions

Marking

Stainless steel grade 03Х17Н13М2 according to GOST 5632-2014 (316L)

/316L

Locknut (cylindrical and metric threads)

/KG

Marine version

/MORE

PG-THREAD-G Anaerobic Sealant

/PG-THREAD-G

Non-explosion-proof design

/PROM

External sealing ring to maintain tightness (cylindrical and metric threads)

/UKF

Submit request

Application details

Quantity

Additional description

0 / 300

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Model Breakdown

RKNN-ZK - 1x 2x ( 3x 4 xx ) 5TU 27.33.13-031-72453807-2017

1X - Diameter

2X - Material

3X - Number of wires

4X - Wire cross-section

5X - Length of free ends of wires, Dm

EXAMPLE: RKNN-ZK-10N(3x2.5)2-TU 27.33.13-031-72453807-2017
- Feedthrough insulator with two threaded external connections, sealed with compound,
- connecting thread M10,
- material stainless steel,
- 3 wires with a cross-section of 2.5 mm,
- length of free ends of wire 2 dm.

It is possible to manufacture non-standard nipple barriers according to the customer’s design.